Yaskawa MP900 Series Ladder Programming Manual - Manual (Page 295)

5.10 System Function Instructions
5.10.1 Counter (COUNTER)
5-226
( 2 ) Format
∗ 1. M or D register only.
∗ 2. C and # registers cannot be used.
The parameters are described in the following table.
∗ If the count up command and count down command change from OFF to ON at the same time, the current value
stays the same.
Parameter Name
Applicable Data Types
B W L F A Index Constant
Count up command
(Up-Cmd)
{ × × × × × ×
Count down
command
(Down-Cmd)
{ × × × × × ×
Counter reset
command (Reset)
{ × × × × × ×
First address of
counter processing
data area (Cnt-Data)
× × × × { *1 × ×
Count up (Cnt-Up) { *2 × × × × × ×
Zero count (Cnt-Zero) { *2 × × × × × ×
Count error (Cnt-Err) { *2 × × × × × ×
Parameter Name Description I/O
Count up command (Up-Cmd)
The count value is incremented when this command
changes from OFF to ON.*
IN
Count down command (Down-Cmd)
The count value is decremented when this command
changes from OFF to ON.*
IN
Counter reset command (Reset)
The current value is reset to 0 when this command turns
ON.
IN
First address of counter processing data area
(Cnt-Data)
+0 word: Set value IN
+1 word: Current value OUT
+2 word: Work flags OUT
Count up (Cnt-Up) Turns ON when the current value equals the set value. OUT
Zero count (Cnt-Zero) Turns ON when the current value equals 0. OUT
Count error (Cnt-Err)
Turns ON when the current value is greater than the set
value.
Also turns ON when the current value is less than 0.
OUT
Icon:
Key entry: COUNTER